Question

Какие силы, действуют на человека, который стоит на полу?

Answer 1

Сила тяжести m*g
сила нормального давления (или проще говоря сила реакции опоры) N

Answer 2

Forces Acting on a Person Standing on the Floor

When a person is standing on the floor, several forces are acting on them. These forces include:

1. Gravity: - The force of gravity pulls the person towards the center of the Earth. - This force is what gives an object weight and is responsible for keeping the person grounded.

2. Normal Force: - The floor exerts an equal and opposite force, known as the normal force, to support the person's weight and prevent them from falling through the floor. - The normal force is perpendicular to the surface of the floor and counteracts the force of gravity.

3. Friction: - If the person is not sliding, static friction acts parallel to the surface of the floor and opposes the motion. - It prevents the person from slipping and provides stability while standing.

4. Air Resistance (Negligible): - When standing still, the effect of air resistance on the person is generally negligible and can be disregarded in most cases.

These forces collectively contribute to the equilibrium and stability of a person standing on the floor.